Arnault, Niarchos and Lau moved into the top 10 this year, replacing Ronald Lauder, Carlos Slim and Henry Kravis.

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Long popular with shipping magnates, including members of the Niarchos family, the region has recently attracted a growing number of the wellborn and the well-heeled, who love its unspoiled coastline and easy access to stylish islands such as Spetses and Hydra.

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Separately and together, he and his sometime lover and regular companion, Giancarlo Giammetti, made sure to greet and double-cheek kiss friends and supporters sitting at all the tables in their area, ranging from the young (the former reality-television star Olivia Palermo, the Brant brothers, the model Jessica Hart and her shipping-heir boyfriend, Stavros Niarchos) to the established (the interior designer Mica Ertegun, Barbara Walters, the Texan philanthropist Lynn Wyatt, the Greek businesswoman Gianna Angelopoulos-Daskalaki).

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